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MAC address, {727E0CB3-D531-45CA-9076-8D37862FDB79} - Coggle Diagram
MAC address
Ethernet or WLAN is like a big party where everyone is chatting in the same room. To make sure messages get to the right people, each network interface has a unique name tag called a MAC (Media Access Control) address.
This is like a device's name in the language of the Ethernet. It's used to identify who sent a message and who the message is for.
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Composition
First half
It is the vendor part called "Organizationally Unique Identifier" (OUI). It identifies the manufacturer or vendor of the network interface card (NIC) or device.
Second half
The second part is the "Device Identifier" and is unique within the context of the manufacturer's OUI.
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This number has 48 bits. 8 bits is one byte and therefore these 48 bits are 6 bytes. Each byte of the MAC number is usually separated with a dash (see picture) or a colon.
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